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J. H. BBRKSHIRR vFEED WATER EEATEE AND PUEIEIEE. No. 293,622. Patented Feb. 19,1884.

NA PETERS. Phnwunwgmphur. washington, D. C.v

UNITED STATES PATENT OFFICE.

JOHN H. BERKSHIRE, OF MUSOATINE, IOVA, ASSIGN OR TO THE KENNEDY 85 BERKSHIRE FEED WATER HEATER AND FILTERA MANUFACTURING COMPANY.

FEED-WATER HEATER AND PURI'FIER.

' SPECIFICATION forming part of Letters Patent No. 293,622, dated February 19, 1884;.

I Application filed September 27, 1883. (No rnodel.),v

To all whom it may concern Be it known that I, JOHN H. BEEKsHiRE, a citizen of the United States of America, residing at Muscatine, in the county of Musca- 5 tine and State of I owa, have invented Vcertain new and useful Improvements in FeedWater Heaters and Purifiers, of which the following vertical central section of the feed-water heater Y. 2o and purifier. l

A is avertical cylindrical vessel, constructed,

in a well-known manner, of plate iron or steel.

B is the cold-water-supply pipe extended through the top of the vessel and provided 2 5 4at the lower end with a perforated sprayer, b, by which the water is sprayed into the vessel.

C isasteam-pipe of suitable size,leading directly from the boilerI into the circular perfo- "rated receiver D, by means of which the live 3c steam is introduced and distributed into the vessel in direct contact with the fallingwater.

E is a diaphragm dividing the vessel into.

two compartments, connected with each other only through the central scumchamber,F, and

3 5 tube or pipe G, leading into the precipitatingchamber H, which communicates through the perforated plates c c c with the filtering-cham bers d d and pure-water chamber d.

K is the feed-water pipe leading from the 4o pure-water chamber d into the boiler. (Not shown.)

L is a scum-pipe having the vertical perforated portion j arranged in and extending downward partly through the center of the 4 5 scum-chamber F. The vertical perforated portion of the scum-pipe is required to be of such length and in such position in relation to the water in the heater as will enable it to take its supply from the surface, and thus remove the scum.

M is an escape-gas pipe connecting the top of the heater with the pipe M', leading from the boiler to the engine, or with any other circulating-pipe, for the purpose of carrying off any gases which may be generated or re- 5 5 leased by the action of steam upon the water. The filtering chambers are provided with man-holes h h for packing purposes. The pure water chamber d. and pre'cipitatingchamber H are provided with openings h h2, 6o to admit into `each a stream of water for wash ing lout the chambers.

N is a blow-off pipe at the bottom of the heater, through which the-accumulated iml puritiesmay be blown off. The cold water 65 descending through the pipe B is sprayed into the vessel through the sprayer b, and the live steam entering through the pipe C into the receiver and distributer DA is brought in direct contact with the sprayed water, and the water, 7o i perforated plates c c cinto the filtering-cham 7 5 bers d d and pure-water chamber d. As the water ascends from chamber H, the released impurities, which will neither precipitate nor fioat, will be intercepted in the upward passage through the filters, and the water will 8o enter the chamber d in a practically-pure state, and will be thence conveyed tothe boiler through the pipe 7c. In the contact between the steam and water more or less gases will be generated or released, and will naturally as- 85 eend to the top of the vessel, and will be carried out of the vessel through the pipe M, thus preventing such gases from entering the boiler.

It will be observed that the horizontal portion L of the blow-off pipe is located above 9o the water-line in the heater, and the vertical portion f of this pipe-extends downward in the center of the scum-chamber, and is perforated from the water -line downward to its closed end. The scum-chamber consisting of' 95 the mouth of a comparatively-small central tube, through which all the water is conveyed, there 1s constantly a strong downward current drawing the scum to the center of the scumwhich may be carried down the central tube below all the perforations in the portion f of the pipe will be removed by the upward and outward iiow of the steam, which will be produced through lthe pipe when the water falls below the perforated portion f.

I claim 1. In a feed-water heater having the scurn chamber F, consisting of the mouth of the central tube, G, the scuni-blow-off pipe consisting of the horizontal portion L, arranged above the water-line, and of the vertical portion f, extended downward in the center of the scum-chamber, and perforated from the water-line downward to its closed end, substantially as and for the purposes set forth.

2. In a feed-water pressure-heater, the escape-pipe M, connecting the water and steam receiving chamber of the heater with a steamcirculating pipe, M, in combination with the live-steaminduction pipe C, substantially as and for the purposes described.

In testimony whereof I have aiixcd my sig nature in presence of two witnesses.

JOHN H. BERKSHIRE.

Vitnesses:

T. R. FITZGERALD, C. E. STEWART. 

